#include <stdio.h>
#include <string.h>
char *s_gets(char *st, int n);
#define MAXTITL 40
#define MAXAUTL 40
#define MAXBKS 100
struct book
{
    char title[MAXTITL];
    char author[MAXAUTL];
    float value;
};
int main()
{
    struct book library[MAXBKS];
    int count = 0;
    int index;
    printf("Please enter the book title.\n");
    printf("Press [enter] at the start of a line to stop.\n");
    while (count < MAXBKS && s_gets(library[count].title, MAXTITL) != NULL && library[count].title[0] != '\0')

    {
        printf("Now enter the author.\n");
        s_gets(library[count].author, MAXAUTL);
        printf("Now enter the value.\n");
        scanf("%f", &library[count++].value);
        while (getchar() != '\n')
        {
            continue;
        }
        if (count < MAXBKS)
        {
            printf("Enter the next title.\n");
        }
    }
    if (count > 0)
    {
        printf("Here is the list of your books: \n");
        for (index = 0; index < count; index++)
        {
            printf("%s by %s: $%.2f\n", library[index].title, library[index].author, library[index].value);
        }
    }
    else
        printf("No books? Too bad.\n");

    return 0;
}
char *s_gets(char *st, int n)
{
    char *ret_val;
    char *find;
    ret_val = fgets(st, n, stdin);
    if (ret_val)
    {
        find = strchr(st, '\n');
        if (find)
        {
            *find = '\0';
        }
        else
            while (getchar() != '\n')
            {
                continue;
            }
    }
    return ret_val;
}
